Philips tda8764a DATASHEETS

INTEGRATED CIRCUITS

DATA SH EET

TDA8764A

10-bit high-speed low-power ADC

Product specification
File under Integrated Circuits, IC11

2000 Jul 03

Philips Semiconductors Product specification

10-bit high-speed low-power ADC TDA8764A

FEATURES

• 10-bit resolution (binary or gray code)

• Sampling rate up to 60 MHz

• DC sampling allowed

• One clock cycle conversion only

• High signal-to-noise ratio over a large analog input

frequency range (9.3 effective bits at 5 MHz full-scale
input at f

= 60 MHz)

clk

• No missing codes guaranteed

• In Range (IR) CMOS output

• TTL and CMOS levels compatible digital inputs

• 2.7 to 3.6 V CMOS digital outputs

• Low-level AC clock input signal allowed

• Power dissipation only 312 mW

• Low analog input capacitance, no buffer amplifier

required

• No sample-and-hold circuit required.

ORDERING INFORMATION

APPLICATIONS

High-speed analog-to-digital conversion for:

• Video data digitizing

• Radar pulse analysis

• High energy physics research

• Transient signal analysis

•Σ∆modulators

• Medical imaging.

GENERAL DESCRIPTION

The TDA8764A is a 10-bit high-speed low-power
Analog-to-Digital Converter (ADC) for professional video
and other applications. It converts the analog input signal
into10-bitbinaryorgraycodeddigitalwordsatamaximum
sampling rate of 60 MHz. All digital inputs and outputs are
TTL and CMOS compatible, although a low-level sine
wave clock input signal is allowed.

The device requires an external source to drive its
reference ladder.

TYPE NUMBER

PACKAGE

NAME DESCRIPTION VERSION

TDA8764ATS/6 SSOP28 plastic shrink small outline package; 28 leads; body width 5.3 mm SOT341-1
TDA8764AHL/6 LQFP32 plastic low profile quad flat package; 32 leads; body 5 × 5 × 1.4 mm SOT401-1

QUICK REFERENCE DATA

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

V

CCA

V

CCD

V

CCO

I

CCA

I

CCD

I

CCO

INL integral non-linearity f
DNL differential non-linearity f
f

clk(max)

analog supply voltage 4.75 5.0 5.25 V
digital supply voltage 4.75 5.0 5.25 V
output stages supply voltage 2.7 3.3 3.6 V
analog supply current − 29 37 mA
digital supply current − 33 40 mA
output stages supply current f

maximum clock frequency TDA8764ATS and

= 60 MHz; ramp input − 0.5 2.0 mA

clk

= 60 MHz; ramp input −±0.8 ±2 LSB

clk

= 60 MHz; ramp input −±0.35 ±0.9 LSB

clk

60 −−MHz

TDA8764AHL

P

tot

total power dissipation f

= 60 MHz; ramp input − 312 411 mW

clk

2000 Jul 03 2

Philips Semiconductors Product specification

10-bit high-speed low-power ADC TDA8764A

BLOCK DIAGRAM

handbook, full pagewidth

V

RT

analog

voltage input

V

RM

V

RB

V

CCA

3 (7) 1 (5) 10

9 (15)

V

8 (14)

I

7 (13)

6 (12)

ANALOG-TO-DIGITAL

CONVERTER

R

LAD

TDA8764A

4 (8) 12 (18)
AGND

DGND n.c.

CLK

CLOCK DRIVER

IN-RANGE LATCH

5, 27, 28
(9, 1, 3, 4, 10, 11, 32)

V

LATCHES

CCD

14 (20)

OGND

GRAY

OE

(16)

CMOS

OUTPUTS

CMOS

OUTPUT

15 (21)11 (17)

(6) 2

(31) 25
(30) 24
(29) 23
(28) 22
(27) 21
(26) 20
(25) 19
(24) 18

(23) 17
(22) 16

(19) 13

(2) 26

FCE253

TC

D9

MSB

D8
D7
D6
D5
D4
D3
D2
D1

LSB

D0
V

CCO

IR output

data outputs

The pin numbers given in parenthesis refer to the TDA8764AHL.

Fig.1 Block diagram.

2000 Jul 03 3

Philips Semiconductors Product specification

10-bit high-speed low-power ADC TDA8764A

PINNING

SYMBOL

DESCRIPTION

TDA8764ATS TDA8764AHL

CLK 1 5 clock input
TC 2 6 twos complement input (active LOW)

PIN

V

CCA

3 7 analog supply voltage (5 V)
AGND 4 8 analog ground
n.c. 5 9 not connected
V

RB

V

RM

V

I

V

RT

6 12 reference voltage BOTTOM input

7 13 reference voltage MIDDLE input

8 14 analog input voltage

9 15 reference voltage TOP input
OE 10 16 output enable input (active LOW)
V

CCD

11 17 digital supply voltage (5 V)
DGND 12 18 digital ground
V

CCO

13 19 supply voltage for output stages (2.7 to 3.6 V)
OGND 14 20 output ground
GRAY 15 21 gray code input (active HIGH)
D0 16 22 data output; bit 0 (LSB)
D1 17 23 data output; bit 1
D2 18 24 data output; bit 2
D3 19 25 data output; bit 3
D4 20 26 data output; bit 4
D5 21 27 data output; bit 5
D6 22 28 data output; bit 6
D7 23 29 data output; bit 7
D8 24 30 data output; bit 8
D9 25 31 data output; bit 9 (MSB)
IR 26 2 in range data output
n.c. 27 1 not connected
n.c. 28 3 not connected
n.c. − 4 not connected
n.c. − 10 not connected
n.c. − 11 not connected
n.c. − 32 not connected

2000 Jul 03 4

Philips Semiconductors Product specification

10-bit high-speed low-power ADC TDA8764A

handbook, halfpage

Fig.2 Pin configuration (SSOP28).

CLK

TC

V

CCA

AGND

n.c.

V

RB

V

RM

V

RT

OE

V

CCD
DGND
V

CCO
OGND

1
2
3
4
5
6
7

V

8

I

9
10
11
12
13

TDA8764ATS

FCE254

n.c.

28
27

n.c.
IR

26
25

D9

24

D8

23

D7

22

D6
D5

21
20

D4
D3

19

D2

18

D1

17

D0

16

GRAY

1514

handbook, full pagewidth

n.c.

n.c.
n.c.

CLK

TC

V

CCA

AGND

n.c.
32

1

IR

2
3
4
5
6
7
8

9

n.c.

D8

D9
31

30

TDA8764AHL

10

11

n.c.

n.c.

Fig.3 Pin configuration (LQFP32).

2000 Jul 03 5

D7
29

12

RB

V

V

D6
28

13
RM

D5

D4

D3

27

26

25

D2

24

D1

23
22

D0
GRAY

21
20

OGND
V

19

CCO

18

DGND
V

17

CCD

14

15

I

V

RT

V

16
OE

FCE255

Philips Semiconductors Product specification

10-bit high-speed low-power ADC TDA8764A

LIMITING VALUES

In accordance with the Absolute Maximum Rating System (IEC 60134).

SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT

V

CCA

V

CCD

V

CCO

∆V

CC

V

I

V

i(sw)(p-p)

I

O

T

stg

T

amb

T

j

analog supply voltage note 1 −0.3 +7.0 V
digital supply voltage note 1 −0.3 +7.0 V
output stages supply voltage note 1 −0.3 +7.0 V
supply voltage difference between

V
V
V

CCA
CCA
CCD

− V

− V

− V

CCD
CCO
CCO

−1.0 +1.0 V

−1.0 +4.0 V

−1.0 +4.0 V

input voltage referenced to AGND −0.3 +7.0 V
AC input voltage for switching (peak-to-peak value) referenced to DGND − V

CCD

V
output current − 10 mA
storage temperature −55 +150 °C
ambient temperature −40 +85 °C
junction temperature − 150 °C

Note

1. The supply voltages V

CCA

, V

CCD

and V

may have any value between −0.3 and +7.0 V provided that the supply

CCO

voltage differences ∆VCC are respected.

HANDLING

Inputs and outputs are protected against electrostatic discharges in normal handling. However, to be totally safe, it is
desirable to take normal precautions appropriate to handling integrated circuits.

THERMAL CHARACTERISTICS

SYMBOL PARAMETER CONDITIONS VALUE UNIT

R

th(j-a)

thermal resistance from junction to ambient in free air

SSOP28 110 K/W
LQFP32 90 K/W

2000 Jul 03 6

Philips Semiconductors Product specification

10-bit high-speed low-power ADC TDA8764A

CHARACTERISTICS

V

= 4.75 to 5.25 V; V

CCA

T

= 0 to 70 °C; typical values measured at V

amb

and T

=25°C; unless otherwise specified.

amb

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
Supplies

V
V
V
∆V

CCA
CCD
CCO

CC

analog supply voltage 4.75 5.0 5.25 V
digital supply voltage 4.75 5.0 5.25 V
output stages supply voltage 2.7 3.3 3.6 V
supply voltage difference

between

V

− V

CCA

V

− V

CCA

V

− V

CCD

I

CCA

I

CCD

I

CCO

analog supply current − 29 37 mA
digital supply current − 33 40 mA
output stages supply current f

Inputs

= 4.75 to 5.25 V; V

CCD

CCD
CCO
CCO

= 2.7 to 3.6 V; AGND and DGND shorted together;

CCO
CCA=VCCD

=5V; V

= 3.3 V; VRB= 1.3 V; VRT= 3.7 V; CL=10pF

CCO

−0.20 −+0.20 V

−0.20 − +2.55 V

−0.20 − +2.55 V

= 60 MHz; ramp input − 0.5 2.0 mA

clk

PIN CLK (REFERENCED TO DGND); note 1
V

IL

V

IH

I

IL

I

IH

C

i

LOW-level input voltage 0 − 0.8 V
HIGH-level input voltage 2 − V
LOW-level input current V
HIGH-level input current V

= 0.8 V −10+1 µA

CLK

=2V − 210 µA

CLK

input capacitance − 2 − pF
PINS OE; TC AND GRAY (REFERENCED TO DGND); see Tables 3 and 4
V

IL

V

IH

I

IL

I

IH

LOW-level input voltage 0 − 0.8 V

HIGH-level input voltage 2 − V

LOW-level input current VIL= 0.8 V −1 −− µA

HIGH-level input current VIH=2V −−1 µA
PIN VI(ANALOG INPUT VOLTAGE REFERENCED TO AGND)
I

IL

I

IH

Y

i

LOW-level input current VI=VRB= 1.3 V − 0 −µA

HIGH-level input current VI=VRT= 3.7 V − 55 −µA

input admittance fi= 5 MHz; note 2

R

input resistance − 45 − kΩ

i

C

input capacitance 3 5 7 pF

i

CCD

CCD

V

V

2000 Jul 03 7

Philips Semiconductors Product specification

10-bit high-speed low-power ADC TDA8764A

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
Reference voltages for the resistor ladder; see Table 1

V

RB

V

RT

V

diff(ref)

I

ref

R

LAD

TC

RLAD

V

offset(B)

V

offset(T)

V

I(p-p)

Outputs

reference voltage BOTTOM 1.2 1.3 2.2 V

reference voltage TOP 3.4 3.7 V

differential reference voltage

VRT− V

RB

reference current V

= 2.4 V − 17.6 − mA

diff

2.2 2.4 3.2 V

− 0.8 V

CCA

resistor ladder − 136 −Ω

temperature coefficient of the

resistor ladder

offset voltage BOTTOM V

offset voltage TOP V

analog input voltage

= 2.4 V; note 3 − 200 − mV

diff

= 2.4 V; note 3 − 190 − mV

diff

V

= 2.4 V; note 4 1.95 2.01 2.10 V

diff

− 1860 − ppm

− 253 − mΩ/K

(peak-to-peak value)

PINS D9 TO D0 AND IR (REFERENCED TO OGND)
V

OL

V

OH

I

OZ

LOW-level output voltage IOL= 1 mA 0 − 0.5 V

HIGH-level output voltage IOH= −1mA V

output current in 3-state mode 0.5 V < VO<V

Switching characteristics

PIN CLK; see Fig.5; note 1
f

clk(max)

t

CPH

t

CPL

maximum clock frequency 60 −− MHz

clock pulse width HIGH T

clock pulse width LOW T

Analog signal processing

LINEARITY
INL integral non-linearity f

DNL differential non-linearity f

E
E

offset
G

offset error middle code −±1− LSB

gain error (from device to device) note 5 −±0.5 − %

− 0.5 − V

CCO

CCO

=25°C 7.0 −− ns

amb

=25°C 3.5 −− ns

amb

= 60 MHz; ramp input −±0.8 ±2 LSB

clk

= 60 MHz;ramp input;

clk

−20 − +20 µA

−±0.35 ±0.9 LSB

CCO

no missing code

V

2000 Jul 03 8